The men were arrested in October in an investigation by local and federal authorities that uncovered 19 kilograms of heroin with an estimated value of $4.5 million.

Estrada pleaded guilty to one count of possessing with the intent to distribute one kilogram or more of heroin. Feliz pleaded guilty to one count of attempting to possess with the intent to distribute one kilogram or more of heroin.

The maximum sentence for both is life in prison and a fine of up to $10 million.